/Engine/Source/Runtime/Slate/Public/Framework/Docking/TabManager.h
class FArea : public [FTabManager::FSplitter](API\Runtime\Slate\Framework\Docking\FTabManager\FSplitter)
bool
bIsMaximized
FName
ExtensionId
FVector2D
UnscaledWindowPosition
FVector2D
UnscaledWindowSize
EWindowPlacemen...
WindowPlacement